<template>
  <div id="app">
    <el-form inline :model="data" :rules="rules" ref="form" validate-on-rule-change status-icon>
      <el-form-item label="审批人" prop="user" :error="error" :validate-status="status">
        <el-input v-model="data.user" placeholder="审批人"></el-input>
      </el-form-item>
      <el-form-item label="活动区域">
        <el-select v-model="data.region" placeholder="活动区域">
          <el-option label="区域一" value="shanghai"></el-option>
          <el-option label="区域二" value="beijing"></el-option>
        </el-select>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" @click="onSubmit">查询</el-button>
        <el-button type="primary" @click="addRule">添加校验规则</el-button>
        <el-button type="success" @click="showSuccess">校验成功</el-button>
        <el-button type="danger" @click="showError">校验失败</el-button>
        <el-button type="warning" @click="showValidating">校验中</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
export default {
  name: 'app',
  data() {
    // const userValidator = (rule, value, callback) => {
    //   if (value.length > 3) {
    //     callback()
    //   } else {
    //     callback(new Error('用户名长度必须大于3'))
    //   }
    // }
    return {
      error: '',
      status: '',
      data: {
        user: '',
        region: ''
      },
      rules: {
        user: [
          { required: true, trigger: 'change', message: '用户名必须录入' },
          // { validator: userValidator, trigger: 'change' }
        ]
      }
    }
  },
  methods: {
    onSubmit() {
		console.log(this.data)
		this.$refs.form.validate((isValid,errors)=>{
			console.log(isValid,errors)
		})
	},
	addRule() {
		const userValidator = (rule, value, callback) => {
			if (value.length > 3) {
				// this.inputError = ''
				// this.inputValidateStatus = ''
				callback()
			} else {
				callback(new Error('用户名长度必须大于3'))
			}
		}
		const newRule = [
			...this.rules.user,
			{ validator: userValidator, trigger: 'change' }
		]
		this.rules = Object.assign({}, this.rules, { user: newRule })
	},
	showError() {
      this.status = 'error'
      this.error = '用户名输入有误'
	},
	showSuccess() {
      this.status = 'success'
      this.error = ''
	},
	showValidating() {
      this.status = 'validating'
      this.error = ''
	}
  }
}
</script>

<style>
#app {
  font-family: 'Avenir', Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
</style>
